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Reviewed, UniProtKB/Swiss-Prot Q9FMT1 (LEU33_ARATH)

Last modified November 4, 2008. Version 52. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (4) | Third-party data | Customize display text xml rdf/xml gff fasta
Names and origin · Protein attributes · General annotation (Comments) · Ontologies · Alternative products · Sequence annotation (Features) · Sequences · References · Cross-references · Entry information · Relevant documents

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Names and origin

Protein namesRecommended name:
    3-isopropylmalate dehydrogenase 3, chloroplastic
      Short name=3-IPM-DH 3
      Short name=IMDH 3
    EC=1.1.1.85
Alternative name(s):
    Beta-IPM dehydrogenase 3
Gene names
Name: IMDH3
Ordered Locus Names: At5g14200
ORF Names: MUA22.20
OrganismArabidopsis thaliana (Mouse-ear cress) [Complete proteome]
Taxonomic identifier3702 [NCBI]
Taxonomic lineageEukaryota › Viridiplantae › Streptophyta › Embryophyta › Tracheophyta › Spermatophyta › Magnoliophyta › eudicotyledons › core eudicotyledons › rosids › eurosids II › Brassicales › Brassicaceae › Arabidopsis

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Protein attributes

Sequence length409 AA.
Sequence statusComplete.
Sequence processingThe displayed sequence is further processed into a mature form.
Protein existenceEvidence at transcript level.

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General annotation (Comments)

Function

Catalyzes the oxidation of 3-carboxy-2-hydroxy-4-methylpentanoate (3-isopropylmalate) to 3-carboxy-4-methyl-2-oxopentanoate. The product decarboxylates to 4-methyl-2 oxopentanoate.

Catalytic activity

(2R,3S)-3-isopropylmalate + NAD(+) = 4-methyl-2-oxopentanoate + CO(2) + NADH.

Cofactor

Binds 1 magnesium or manganese ion per subunit By similarity.

Pathway

Amino-acid biosynthesis; L-leucine biosynthesis; L-leucine from 3-methyl-2-oxobutanoate: step 3/4.

Subunit structure

Homodimer By similarity.

Subcellular location

Plastid › chloroplastBy similarity.

Sequence similarities

Belongs to the isocitrate and isopropylmalate dehydrogenases family.

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Ontologies

Keywords

   Biological processAmino-acid biosynthesis
Branched-chain amino acid biosynthesis
Leucine biosynthesis
   Cellular componentChloroplast
Plastid
   Coding sequence diversityAlternative splicing
   DomainTransit peptide
   LigandMagnesium
Manganese
Metal-binding
NAD
   Molecular functionOxidoreductase
   Technical termComplete proteome

Gene Ontology (GO)

   Biological processoxidation reduction

Inferred from electronic annotation. Source: UniProtKB-KW

   Cellular componentchloroplast

Inferred from electronic annotation. Source: UniProtKB-KW

   Molecular functionmagnesium ion binding

Inferred from electronic annotation. Source: UniProtKB-KW

manganese ion binding

Inferred from electronic annotation. Source: UniProtKB-KW

Complete GO annotation...

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Alternative products

This entry describes 1 isoform produced by alternative splicing. [Select]

Notes: A number of isoforms are produced. According to EST sequences.
Isoform 1 (identifier: Q9FMT1-1)

This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.

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Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Transit peptide1 – 3737Chloroplast Potential
Chain38 – 4093723-isopropylmalate dehydrogenase 3, chloroplastic
PRO_0000014455

Regions

Nucleotide binding120 – 13314NAD By similarity
Nucleotide binding326 – 33813NAD By similarity

Sites

Metal binding2681Magnesium or manganese By similarity
Metal binding2921Magnesium or manganese By similarity
Metal binding2961Magnesium or manganese By similarity
Binding site1401Substrate By similarity
Binding site1501Substrate By similarity
Binding site1781Substrate By similarity
Binding site2681Substrate By similarity
Site1851Important for catalysis By similarity
Site2361Important for catalysis By similarity

Experimental info

Sequence conflict2511T → A in AAL67125. Ref.2

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Sequences

Sequence LengthMass (Da)Tools
Isoform 1 [UniParc].

Last modified March 1, 2001. Version 1.
Checksum: 471293D4C3FB55DD

FASTA40944,162
        10         20         30         40         50         60 
MAAFLQTNIS LNAIKIVPGK YSSLTDHQFR APYRIRCAAA SPGKKRYNIA LLPGDGIGPE 

        70         80         90        100        110        120 
VISVAKNVLQ KAGSLEGLEF DFKEMPVGGA ALDLVGVPLP EETFTAAKLS DAILLGAIGG 

       130        140        150        160        170        180 
YKWDKNEKHL RPEMALFYLR RDLKVFANLR PATVLPQLVD ASTLKKEVAE GVDMMIVREL 

       190        200        210        220        230        240 
TGGIYFGEPR GITINENGEE VGVSTEIYAA HEIDRIARVA FETARKRRGK LCSVDKANVL 

       250        260        270        280        290        300 
DASILWRKRV TALASEYPDV ELSHMYVDNA AMQLIRDPKQ FDTIVTNNIF GDILSDEASM 

       310        320        330        340        350        360 
ITGSIGMLPS ASLGESGPGL FEPIHGSAPD IAGQDKANPL ATILSAAMLL KYGLGEEKAA 

       370        380        390        400 
KRIEDAVVDA LNKGFRTGDI YSPGNKLVGC KEMGEEVLKS VESKVPATV

« Hide

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Cross-references

Sequence databases

AB007650 Genomic DNA. Translation: BAB08299.1.
AY074587 mRNA. Translation: AAL67125.1.
RefSeqNP_196924.1.
UniGeneAt.6515

3D structure databases

HSSPHSSP built from PDB template 1A05 based on UniProtKB Q56268.
ModBaseSearch...

Genome annotation databases

GeneID831270.
GenomeReviewsGene locus AT5G14200 in contig BA000015_GR.
NMPDRfig|3702.1.peg.23549.

Organism-specific databases

TAIRAt5g14200.

Family and domain databases

InterProIPR004429. 3-isopropylmalate_DHase.
IPR001804. IsoCit_IM_DHase.
[Graphical view]
Gene3DG3DSA:3.40.718.10. IDH_IMDH. 1 hit.
PANTHERPTHR11835. IDH_IMDH_dimeric. 1 hit.
PTHR11835:SF13. IPMDH. 1 hit.
PfamPF00180. Iso_dh. 1 hit.
[Graphical view]
TIGRFAMsTIGR00169. leuB. 1 hit.
PROSITEPS00470. IDH_IMDH. 1 hit.
[Graphical view]
BLOCKSSearch...
ProtoNetSearch...

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Entry information

Entry nameLEU33_ARATH
AccessionPrimary (citable) accession number: Q9FMT1
Secondary accession number(s): Q8VXU4
Entry history
Integrated into UniProtKB/Swiss-Prot: July 11, 2002
Last sequence update: March 1, 2001
Last modified: November 4, 2008
This is version 52 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation projectPPAP (Plant Proteome Annotation Project)

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Relevant documents

Arabidopsis thaliana

Arabidopsis thaliana: entries and gene names

PATHWAY comments

Index of metabolic and biosynthesis pathways

UniProtKB secondary accession numbers

Index of UniProtKB secondary accession numbers

SIMILARITY comments

Index of protein domains and families

Names and origin · Protein attributes · General annotation (Comments) · Ontologies · Alternative products · Sequence annotation (Features) · Sequences · References · Cross-references · Entry information · Relevant documents